a problem aboat quartus ii 9.1

hi:

when i hava finished a pwm ip which has three registers,when i integrate into sopc with the sopc builder,but i also have three software files /hal/inc/pwm_routines.h hal/src/pwm_routines.c inc/pwm_regs.h i don't know how to put my header file into nios software, i want to use this pwm ip in any project like altera ip in the sopc builder .;)